Carbureter.



A. E. STONER.

CARBURETEH,

i APPLICATION FILED SEPT. l, H3115` Mmmm@ 24, ww

A i; A

ALBERT E. STOKER, F KANSAS CITY, MISSOURI, ASSGNR TO ARTHUR Gr. BLAUNER,

@F KANSAS CITY, MISSOURI. I

CARBURETER.

Application filed September 1, 1915.

lo @ZZ whom t muy concern Be it known that l, ALBERT F. Sroiinn, a citizen of the United States, residing at Kansas City, in the county ot Jackson and State of Missouri, have invented certain new and useful Improvements in Carbureters, of which the following is a specitication.

My invention relates tocarbureters for in Icrnal combustion engines, and while susy ceptible to genera-l use is particularlyI adapted for automobile motors where a proper combustible mixture at different speeds is important to obtain maximum efficiency at a minimum expenditure of fuel. f

.ln order that the invention may be fully understood, reference will now be made to the accompanying drawing, in which:

Figure l is a central vertical section, partly in elevation, of the carbureter.

Fig. 2 is a plan view of the carbureter with its cap removed.

Fig. 3 is an irregular section, enlarged, on line lll-lll of Fig. 2.

Referring now in detail to the several parts, l designates a case having a chamber/ 2, to which the :dow of gasolene is controlled by an inlet valve 3, and from'whfich the flow is controlled by an outlet valve 4.' The inlet valve 3 has a seat in the upper end of a nipple 5, screwed into the bottom of the case l and provided with internal threads 6 whereby 'it may be coupled to a supply pipe` leading from a gasolene tank, not shown.

The inlet valve 3 has a tubular guide 7 slidable on the nipple 5, and a guide stem 8 slidable in a cap 9, threaded in the upper portion of the case 1. Forts l0 in the valve 3 permit gasolene to Flow from the nipple into the chamber 2 when said valve 3 is raised from its seat in the upper end oitl the nipple 5.

il designates a' float arranged in the chamber 2 and connected by a lever l2 to the inlet valve 3 to automatically open and close the same. The lever l2 consists of arms 13 and le fulcrumed upon a pivot l5. rlhe arm 13 is rigidly secured to the underside of the float Il by a screw 16 and the arm 14E is adjustably secured to the varm 13 by' a screw 17, embraced by a coiled spring 18 interposed between the top 19 ot the arm l-'l and the bottom 20 ofthe arm 13. By adjusting the screw 17 up or down the float 1l is adjusted therewith and accordingly Specification of Letters Patent.

Patented July 234i, Eiwit?,

Serial No. 48,431.

regulates the level ot the gasolenc in the chamber The upper end ot the arm lil is biturcated and projects between peripheral shoulders 2l on the inlet valve 3 to actuate the saine.

rFhe outlet valve l has a seat 22 in a guide nipple 23, screwed into the bottom of the chamber 2 and having ports 24, through which the gasolene flows into a horizontal duct 25, leading to a chamber 2G at the opposite end ot' the carbureter from that vcontaining tlie inlet valve 3.

The lower end of the chamber 26 is closed by a plug 27 having ports 28 communicating with its lower portion, which in turn communicates with an atomizer 29 extending vertically into a carbureting chamber 30 containing a throttle valve 3l, which controls the flow of the combustible mixture to the manifold of the motor, not shown.

rllhe atomizer 29 consists of a tube 32 provided at its lower end with an inlet duct 33. Said tube 32 also has ports 34 and 35, the latter communicating with the chamber 30, and the former with an air chamber 3G i having inlet ports 37 open to the atmosphere. The ports 34 are normally submerged with gasolene, so that air must pass therethrough in its passage from the ports 37 to the atomizer 29.

The chambers 26 and 36 are separated from each other by a flanged nut 3G,thread ed into the plug 27 and provided with internal threads to receive the threaded lower portion of the atomizer 29. A drain-cock 27 n, is threaded into the drain opening provided in the lower portion et the plug 27 through which gasolene and sediment may be drained from the carbureter.

The chambers 26 and 3G are defined within the vertical bore, which is formed in the casing l at the opposite end of the carbureter trom that containing the inlet valve 3, by the tapering extension 70, depending from the carbureting chamber, and the closure plug 27. The carbureting chamber scction seats on the upper end et the tubular part 7l, whereas the plug 27 engages the lower end of said part" and has an internally threaded cylindrical wall 7 2 extending upwardly into the bore ot said tubular part. This wall of ring-like torni is spaced inwardly tromthe wall of the bore to provide encircling and central chambers 26 between which the ports 28 establish communication.

vided with the flange 3Ga which seats on the wall 72 and constitutes a partition between the chamber 26 and chamber 36. Above the flange 36n the depending extension is provided with ports registering with -ports 34 of the atomizer 29.

The latter is threaded in the lower end of the extension and extends upwardly into the carbureting chamber.

In assembling these parts, the atomizer is first threaded in the tapered end of the extension 7l and then the two, as a unit, are inserted in the tubular part 70 and the closure plug 27 lscrewed on said extension in an obvious manner.

3S designates an auxiliary air valve for admitting air directly to the chamber 30 from the outer atmosphere. Said auxiliary air valve 38 automatically opens and closes the outlet valve 4 through the intermediacy of the lever 39, a disk 40, and parts mounted upon said disk 40. The lever 39 is fulcrumed at 41 and provided at one end with a stud 42 projecting into the .groove of Va collar 43, ixed to the stem 44 of the valve 38. The opposite bifurcated end of the lever 39 engages a stud 45 on the disk 40 to rock the same and the outlet valve 4. Said disk 40 has a lug 4G at one end to which a lever 47 is pivotally connected, and a pair of upwardljnextending lugs 48 at its opposite end to prevent independent lateral movement of said llever 47. Lever 47 is provided at its 'tree end with a roller 49 adapted to traverse a segmentall spring 50 fixed by suitable means, such as screws 5l to the lid lEL of thc case l. vWear between the stud 45 and the bifurcated end ot the lever 39 is taken up by a coiled spring 45a secured at one end to the lid la and at its opposite end to a set-screw 45", securing a collar k45c to the inlet valve 4.

The segmental spring 50 is divided into a series of segments 52 by radial slits 53, so that they may be individuallyadjusted to different inclinations by screws 54, having conical ends underlyingi saidy segments 52 'to raise and lower the same. The screws 54 are threaded in a segmental shoulder 55 on the lid la and after being properly adjusted are held from accidental movement by coil springs 5G, interposed between the shoulder 55 and the heads 54l of said screws 54.

57 designates a split nut in which the outlet valve' 4 is threaded, so that it may be manually adjusted in properrelation to its seat 22. yAfter such adjustment the valve 4 is locked from turning in the nut 57 by irmly clamping the latter thereon through the intern'iediacy of a screw 53.

The nut 57 has two lugs 59 bearing directly upon the lever 47, so that it will be raised and lowered by said lever as the roller 49 travels back and forth over the segments 52. As the lever 47 swings back and forth it carries the nut 57 therewith through the intermediacy of a pair of lugs 60 depending therefrom and engaging opposite sides of the lever 47.

Gl designates a coiled spring connected at its lower end to a screw (l2 and at its upper end to the screw 58, to yieldingly force the outlet valve 4 toward its seat 22.'

Dust is excluded from the parts above the lid la, by a cap G3 removably held in place by a screw G4 threaded into a boss G5 on top of the lid la. Said cap (53 has a marginal slot (not shown) for the passage of the lever 39.

In practice the level of the gasolene, or other hydrocarbon oil, in the chamber 2 is automatically controlled by the float l1, which unseats the inlet valve 3 just as soon as the gasolene drops below a predetermined point. 95

The escape of gasolene from the chamber 2 to the atomizer 29 is automatically consi". trolled by the outlet valve 4, which in turn is automatically controlled by the auxiliary air valve 38, as above described.

As the speed of the motor varies the roller 49 traverses back and forth over the segments 52 and raises and lowers the outlet valve 4 accordingk to the elevation of each member 52, andsince the latter may be adjusted independently of each other it is apparent that the degree of opening of said outlet valve 4 during its rocking movement can be regulated to give the most eilicient results. throughout the various speeds at which the motor travels.

The presence of gasolene in the chamber 36 obviates the necessity of priming the motor before starting the same, because when said motor is cranked air is drawn through y the ports 37, and on passing downward into the atomizer 29, becomes enriched with gasolene and provides the motor with combustible charges which can be readily ignited.

Having thus described my invention, whatl l claim and desire to secure by Letters Pat ent, is:

l. ln a. carbureter, a casing having a normally closed drain opening in its bottom and a cylindrical wall extending upwardly there-y about to provide an encircling chamber and a central chamber, said casing being further provided with a. communicating port between the encircling chamber and the central chamber, a flanged member threaded in Vthe wall and providing a bottom wall for an air chamber' above the encircling chamber, an atomizer tube threaded through the flanged member and opened at its bottom within the central chamber, said tube further having ports adjacent the bottom of the air chamber, a partition member arranged above the air chamber to define a carbureting chamber, the upper end portion of the tube extending into the latter and having ports opening thereinto', an air inlet for the air chamber, and an oil supply leading to the encircling chamber in the lower end of the casing.

2. In a carbureter, a casing having an upstanding cylindrical wall on its bottom defining a central and a surrounding oil chamber, said casing being provided with means of communication between said chambers, a partitioning member seating on the wall for defining the encircling chamber and servingI as a bottomfor the superposed chamber, a second partitioning member dividing the superposed chamberinto a lower air chamber and an upper carburetinf.; chamber, an atomizer tube verticallyA disposed and having means of communication with thecentral oil chamber andthe superposed air and carbureting chambers, and oil supply means connected to the surrounding oil chamber.

3. A carbureter comprising a casing having a vertical bore, a bottom therefor having a cylindrical wall extending up into the bore of the casing, a carbureting chamber section extending downwardly through the upper end of the casing and being threadedly engaged with the wall of the bottom, said section having a flange seating on the bottom wall and fitting the casing bore to define superposed oil and air chambers, an air inlet for the air chamber, an oil supply for the oil chamber, and an atomizer tube extending upwardly from the d' oil chamber into the carbureting chamber and having means of communication with all three chambers.

4. A carbureter comprising a casing having a .vertical bore, a bottom therefor, a top section including a carbureting chamber and a depending tubular part threadedly engaged with the bottom, said tubular part of the top section having an annular flange fitting the bore of the casing and defining with the latter superposed oil and air chambers, an atomizer tube secured in said tubular `part and having means of communication with the oil, air and carbureting chambers, and an'oil supply connected with the oil chamben In testimony whereof I afiiX my signature, in the presence of two witnesses.

, v ALBERT E. STOKER. Witnesses:

A. Gr. BLAUNER, F. G. FISCHER. 

